A "subjective feeling" refers to a personal experience or emotion that varies from person to person. It is a feeling that is unique to an individual's perception and cannot be measured or verified by others. Full definition
This measure evaluates global subjective feelings of loneliness and social isolation and is one of the most widely used loneliness scales. (interpersona.psychopen.eu)
I feel like I would give people a disservice if I started pouring my own subjective feelings about something into an apartment listing. (entrepreneur.com)
From this, scientists concluded that we use our own subjective feeling states to interpret the feelings of our partner and much interesting work has followed! (scienceofrelationships.com)